Dryer structure for large-air-volume gas recovery process
The dryer structure, designed with segmented adsorbent filling and sieve plate assembly, solves the problems of uneven desiccant distribution and pulverization in large-volume gas processing, thereby improving the adsorbent utilization efficiency and production continuity.
Patent Information
- Application Number
- CN202422709310.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-11-07
AI Technical Summary
Existing dryers have problems when processing large volumes of gas, such as excessive desiccant loading leading to accelerated pulverization of the bottom adsorbent, uneven gas distribution, and insufficient adsorption and desorption, which affect production continuity and efficiency.
The dryer adopts a segmented adsorbent filling structure. Through the design of the sieve plate assembly and distributor, uniform gas distribution is achieved, and the adsorbent can be replaced in segments through the sieve plate assembly, thereby improving the efficiency of use.
It slows down the pulverization rate of the adsorbent at the bottom of the dryer, increases the hydrogen processing capacity and distribution uniformity, reduces adsorbent waste, and ensures the continuity and economy of the production process.
Smart Images
Figure CN223915062U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of hydrogen purification process equipment, in particular to a dryer structure for large gas recovery process. BACKGROUND
[0002] Hydrogen is a new type of energy with high calorific value and no pollution, which is widely used in industry, commonly used in hydrogenation cracking, hydrogenation treatment, desulfurization and other processes in petroleum processing, and can also be used as a reducing agent in the metallurgical industry, so it is necessary to develop a low-cost and large-gas hydrogen production process. Hydrogen recovery process can not only be applied in the process of electrolyzing water to produce hydrogen, but also be used to purify waste hydrogen discharged from reduction furnace or annealing furnace. Hydrogen recovery process is simple, low in energy consumption, and has good application prospect.
[0003] Green hydrogen production is the most promising development direction in the future, and large-scale water electrolysis is an important source of green hydrogen. Water electrolysis device also gradually develops towards large scale, and there are many electrolytic cells using a set of purification device together. With the further increase of the processing gas volume, the loading amount of the drying agent in the purification device also increases synchronously.
[0004] In the existing process route, an electric heater is usually arranged in the dryer, and the electric heater is started when the dryer is in the regeneration stage. The regeneration gas enters the middle sleeve of the adsorber from the top of the dryer, is heated by the electric heater, and then enters the adsorbent bed layer to vaporize the water on the adsorbent and carry it out, so as to regenerate the drying agent.
[0005] For the related technology in the above, the inventors believe that the dryer used in the water electrolysis hydrogen drying process is generally small in size. If large gas volume raw material gas is treated, the size of the dryer and the loading amount of the drying agent need to be increased. However, if the loading amount of the drying agent is too large, the adsorbent at the bottom of the dryer will be pulverized due to pressure, and at this time, the drying agent at the upper part has not reached the service life. If all the adsorbents are replaced, the adsorbents will be wasted, and the continuity of the entire production process will be affected, causing unnecessary economic losses.
[0006] From the drying process itself, the existing adsorber structure has the problems of uneven flow of raw material gas in the drying bed layer, insufficient drying and desorption of the dryer, and low efficiency of the drying agent when treating large gas volume. CONTENT OF THE UTILITY MODEL
[0007] In order to solve the problems of large-dose drying agent stacking and uneven distribution of gas in the dryer, the present application provides a dryer structure for large gas recovery process.
[0008] The dryer structure for large gas recovery process provided by the present application adopts the following technical scheme:
[0009] The dryer structure for large amount of gas recovery process, including the dryer shell, the first gas inlet and outlet are arranged at the top end of the dryer shell, the second gas inlet and outlet are arranged at the bottom end of the dryer shell, the sieve plate assembly is fixedly connected in the inside of the dryer shell, and multiple sieve plates are arranged along the height direction.
[0010] Optionally, the bottom end of the sieve plate assembly is provided with a fixed support, the end of the fixed support is fixedly connected with the dryer shell, and the sieve plate assembly is fixedly connected with the fixed support.
[0011] Optionally, the sieve plate assembly includes oppositely arranged upper sieve plate and lower sieve plate, and the upper sieve plate and the lower sieve plate divide the inside of the dryer shell into an upper part located at the upper part of the upper sieve plate and a lower part located at the lower part of the lower sieve plate.
[0012] Optionally, the anti-leakage net is arranged between the upper sieve plate and the lower sieve plate, and the mesh diameter of the anti-leakage net is smaller than the mesh diameter of the upper sieve plate and the lower sieve plate.
[0013] Optionally, the upper sieve hole is arranged at the position deviated from the frame of the fixed support of the upper sieve plate, and the lower sieve hole is arranged at the position deviated from the frame of the fixed support of the lower sieve plate.
[0014] Optionally, the handle is fixedly connected at the position opposite to the fixed support of the upper sieve plate.
[0015] Optionally, the inspection hole is arranged at the position above the sieve plate assembly of the side wall of the dryer shell.
[0016] Optionally, the discharge port is arranged at the position below the sieve plate assembly of the side wall of the dryer shell.
[0017] Optionally, the upper distributor is fixedly connected with the first gas inlet and outlet at the top end of the dryer shell, and the lower distributor is fixedly connected with the second gas inlet and outlet at the bottom end of the dryer shell.
[0018] Optionally, the upper distributor includes the upper inlet and outlet gas main pipe, the upper inlet and outlet gas main pipe is in communication with the first gas inlet and outlet, a plurality of upper inlet and outlet gas branch pipes are fixedly connected on both sides of the upper inlet and outlet gas main pipe, the upper inlet and outlet gas branch pipes are in communication with the upper inlet and outlet gas main pipe, and the upper inlet and outlet gas branch pipes are provided with the upper inlet and outlet gas holes at the bottom end; the lower distributor includes the lower inlet and outlet gas main pipe, the lower inlet and outlet gas main pipe is in communication with the second gas inlet and outlet, a plurality of lower inlet and outlet gas branch pipes are fixedly connected on both sides of the lower inlet and outlet gas main pipe, the lower inlet and outlet gas branch pipes are in communication with the lower inlet and outlet gas main pipe, and the lower inlet and outlet gas branch pipes are provided with the lower inlet and outlet gas holes at the top end.
[0019] In summary, the present application includes the following beneficial technical effects:
[0020] 1. By segmentally filling the adsorbent, the adsorbent pulverization rate at the bottom of the dryer is slowed down, the adsorbent can be replaced in segments, the adsorbent use efficiency is improved, the uniformity of hydrogen distribution and the hydrogen treatment capacity are increased. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is the overall structure schematic diagram of the dryer structure for the large gas recovery process in the embodiment of the present application.
[0022] Figure 2 is the internal structure schematic diagram of the dryer structure for the large gas recovery process in the embodiment of the present application.
[0023] Figure 3 is the structure schematic diagram of the sieve plate assembly of the dryer structure for the large gas recovery process in the embodiment of the present application.
[0024] Figure 4 is the structure schematic diagram of the fixed support of the dryer structure for the large gas recovery process in the embodiment of the present application.
[0025] BRIEF DESCRIPTION OF DRAWINGS: 1, dryer shell; 11, first gas inlet and outlet; 12, second gas inlet and outlet; 13, inspection hole; 14, discharge port; 15, charging port; 16, support leg; 2, upper distributor; 21, upper inlet and outlet gas main pipe; 22, upper inlet and outlet gas branch pipe; 3, lower distributor; 31, lower inlet and outlet gas main pipe; 32, lower inlet and outlet gas branch pipe; 4, sieve plate assembly; 41, upper sieve plate; 42, lower sieve plate; 43, anti-leakage net; 44, handle; 5, fixed support; 51, first support cross beam; 52, second support cross beam; 53, first connecting beam; 54, second connecting beam; 55, third connecting beam. DETAILED DESCRIPTION
[0026] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0027] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.
[0028] Hydrogen is a new energy with high calorific value and no pollution, which is widely used in industry, such as hydrogenation cracking, hydrogenation treatment, desulfurization and other processes in petroleum processing, and can also be used as a reducing agent in the metallurgical industry. Therefore, it is necessary to develop a low-cost and large-gas hydrogen production process. The hydrogen recovery process can not only be applied in the process of electrolyzing water to produce hydrogen, but also be used for purifying waste hydrogen discharged from a reduction furnace or an annealing furnace. The hydrogen recovery process is simple and has low energy consumption, and has a good application prospect.
[0029] Green hydrogen production is the most promising development direction in the future, and large-scale water electrolysis is an important source of green hydrogen. Water electrolysis hydrogen production devices are also gradually developing towards large-scale, and there are already demonstration projects with multiple electrolytic cells using a set of purification device. With the further increase of the processing gas volume, the loading amount of the drying agent in the purification device also increases synchronously.
[0030] In the existing process route, an electric heater is usually arranged in the dryer, and the electric heater is started when the dryer is in the regeneration stage. The regeneration gas enters the middle sleeve of the adsorber from the top of the dryer, is heated by the electric heater, and then enters the adsorbent bed layer, so as to vaporize the water on the adsorbent and carry it out, thereby regenerating the drying agent.
[0031] For the above related technologies, the inventors believe that the size of the dryer used in the water electrolysis hydrogen drying process is generally small. If large gas volume raw material gas is treated, the size of the dryer and the loading amount of the drying agent need to be increased. However, if the loading amount of the drying agent is too large, the adsorbent at the bottom of the dryer will be accelerated to pulverize due to the pressure, and at this time, the drying agent in the upper part has not reached the service life. If all the adsorbents are replaced, the adsorbents will be wasted, and the continuity of the entire production process will be affected, causing unnecessary economic losses.
[0032] From the drying process itself, the existing adsorber structure has the problems of uneven flow of raw material gas in the drying bed layer, insufficient drying and desorption of the dryer, and low use efficiency of the drying agent when treating large gas volume gas.
[0033] In order to solve the problems of large-dose drying agent stacking and uneven distribution of gas in the dryer, the present application provides a dryer structure for large gas volume gas recovery process.
[0034] The following will be described in detail with reference to the accompanying drawings. Figures 1-4 The present application will be further described in detail.
[0035] The embodiments of the present application disclose a dryer structure for large gas volume gas recovery process. Referring to Figure 1 , Figure 2The dryer structure for large-volume gas recovery process comprises a dryer shell 1, a first gas inlet and outlet 11 is arranged at the top end of the dryer shell 1, the first gas inlet and outlet 11 penetrates the side wall of the dryer shell 1 completely, and the first gas inlet and outlet 11 is connected with the outside and the inside of the dryer shell 1.
[0036] A second gas inlet and outlet 12 is arranged at the bottom end of the dryer shell 1, the second gas inlet and outlet 12 penetrates the side wall of the dryer shell 1 completely, and the second gas inlet and outlet 12 is connected with the outside and the inside of the dryer shell 1.
[0037] An upper distributor 2 is fixedly connected at the position of the inside top end of the dryer shell 1 relative to the first gas inlet and outlet 11, the upper distributor 2 comprises an upper inlet and outlet gas main pipe 21, the upper inlet and outlet gas main pipe 21 is horizontally arranged, and the upper inlet and outlet gas main pipe 21 is fixedly connected with the inner side wall of the dryer shell 1. Upper inlet and outlet gas branch pipes 22 are arranged at the two sides of the upper inlet and outlet gas main pipe 21, a plurality of upper inlet and outlet gas branch pipes 22 are arranged at the side wall of the upper inlet and outlet gas main pipe 21, the inside of the plurality of upper inlet and outlet gas branch pipes 22 is connected with the inside of the upper inlet and outlet gas main pipe 21, the upper inlet and outlet gas main pipe 21 is connected with the first gas inlet and outlet 11, and the bottom end of the upper inlet and outlet gas branch pipe 22 is provided with an upper inlet and outlet gas hole.
[0038] A lower distributor 3 is fixedly connected at the position of the inside bottom end of the dryer shell 1 relative to the second gas inlet and outlet 12, the lower distributor 3 comprises a lower inlet and outlet gas main pipe 31, the lower inlet and outlet gas main pipe 31 is horizontally arranged, and the lower inlet and outlet gas main pipe 31 is fixedly connected with the inner side wall of the dryer shell 1. Lower inlet and outlet gas branch pipes 32 are arranged at the two sides of the lower inlet and outlet gas main pipe 31, a plurality of lower inlet and outlet gas branch pipes 32 are arranged at the side wall of the lower inlet and outlet gas main pipe 31, the inside of the plurality of lower inlet and outlet gas branch pipes 32 is connected with the inside of the lower inlet and outlet gas main pipe 31, the lower inlet and outlet gas main pipe 31 is connected with the second gas inlet and outlet 12, and the top end of the lower inlet and outlet gas branch pipe 32 is provided with a lower inlet and outlet gas hole.
[0039] Referring to Figure 2 、 Figure 3 , a sieve plate assembly 4 is horizontally arranged in the inside of the dryer shell 1, a plurality of sieve plate assemblies 4 are arranged along the height direction of the dryer shell 1, and the spacing between the plurality of sieve plate assemblies 4 is the same. A fixed support 5 is arranged below the sieve plate assembly 4, the fixed support 5 is a frame structure, and the side wall of the fixed support 5 is fixedly connected with the inner side wall of the dryer shell 1.
[0040] Referring to Figure 3 、 Figure 4 , the fixed support 5 comprises two first support cross beams 51 which are arranged in parallel, the first support cross beams 51 are horizontally arranged, and the two ends of the first support cross beams 51 are fixedly connected with the inner side wall of the dryer shell 1.
[0041] The side wall of the first support beam 51 is horizontally provided with a second support beam 52, and the two second support beams 52 are oppositely arranged and parallel to each other. The second support beam 52 is fixedly connected to the first support beam 51 in a perpendicular manner, and the end of the second support beam 52 is fixedly connected to the inner side wall of the dryer shell 1.
[0042] The end of the opposite two first support beams 51 is provided with a first connecting beam 53, and the two ends of the first connecting beam 53 are fixedly connected to the two first support beams 51, respectively. The end of the opposite two second support beams 52 is provided with a second connecting beam 54, and the two ends of the second connecting beam 54 are fixedly connected to the two second support beams 52, respectively.
[0043] The end of the first support beam 51 close to one side of the end of the second support beam 52 is provided with a third connecting beam 55, one end of the third connecting beam 55 is fixedly connected to the first support beam, and the other end of the third connecting beam 55 is fixedly connected to the second support beam.
[0044] The sieve plate assembly 4 includes an upper sieve plate 41 and a lower sieve plate 42 above the fixed support 5. The upper sieve plate 41 is located above the lower sieve plate 42, and a leak-proof net 43 is arranged between the upper sieve plate 41 and the lower sieve plate 42. The upper sieve plate 41, the lower sieve plate 42 and the leak-proof net 43 completely cover the horizontal cross section of the inside of the dryer shell 1, so as to divide the inside of the dryer shell 1 into an upper part above the sieve plate assembly 4 and a lower part below the sieve plate assembly 4.
[0045] The upper sieve plate 41 is provided with an upper sieve hole at a position staggered with the fixed support 5, and the lower sieve plate 42 is provided with a lower sieve hole at a position staggered with the fixed support 5. The diameters of the upper sieve hole and the lower sieve hole are the same.
[0046] A leak-proof hole is vertically arranged on the side wall of the leak-proof net 43, and the diameter of the leak-proof hole is smaller than the diameters of the upper sieve hole and the lower sieve hole. Therefore, the medium in the upper part can be reduced to enter the inside of the lower part through the upper sieve hole by the leak-proof hole. In some embodiments, the leak-proof net 43 is made of 80-mesh hole material.
[0047] A handle 44 is arranged at a position opposite to the fixed support 5 at the top end of the upper sieve plate 41. The handle 44 is fixedly connected to the upper sieve plate 41, and a plurality of handles 44 are arranged at the top end of the upper sieve plate 41. The handle 44 facilitates the maintenance and replacement of the sieve plate assembly 4.
[0048] A bolt is vertically arranged between the upper sieve plate 41 and the lower sieve plate 42, and the bolt fixedly connects the upper sieve plate 41 and the lower sieve plate 42 in a relative manner, thereby increasing the stability of the overall structure of the sieve plate assembly 4.
[0049] Referring toFigure 1 、 Figure 2 The side wall of the dryer shell 1 is provided with an inspection hole 13 above the sieve plate assembly 4, which is used for the operator to observe the inside of the dryer shell 1.
[0050] The side wall of the dryer shell 1 is provided with a discharge port 14 below the sieve plate assembly 4, through which the adsorbent is discharged from the bed.
[0051] The side wall of the dryer shell 1 is fixedly connected with a charging port 15, which connects the inside of the dryer shell 1 with the outside, and the medium is charged into the inside of the dryer shell 1 through the charging port 15.
[0052] The side wall of the dryer shell 1 is fixedly connected with a support leg 16 at the bottom end, which is vertically arranged, and the dryer shell 1 is vertically arranged and supported by the support leg 16. The outer side wall of the dryer shell 1 is also fixedly connected with a thermal insulation layer, which completely wraps the side wall of the dryer shell 1, facilitating the thermal insulation of the inside of the dryer shell 1.
[0053] During the adsorption process, the raw gas enters the inside of the dryer shell 1 through the second gas inlet and outlet 12, is dispersed by the lower distributor 3, and is redistributed when passing through each layer of sieve plate assembly 4. Finally, the raw gas is adsorbed on the adsorbent bed, and flows out of the dryer shell 1 through the first gas inlet and outlet 11.
[0054] During the regeneration process, the regeneration gas enters the inside of the dryer shell 1 from the first gas inlet and outlet 11, is uniformly distributed by the upper distributor 2, passes through each layer of adsorbent bed and sieve plate assembly 4, and finally flows out of the dryer shell 1 through the second gas inlet and outlet 12.
[0055] In this application, the term "a plurality of" refers to at least two or at least two more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, "connecting" can be fixed connection, or detachable connection, or integral connection; "connecting" can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0056] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "certain embodiments", and the like are intended to indicate that the described implementation, feature, structure, material or characteristic is included in at least one embodiment or example of the present application. The illustrative representations of the above terms in the specification are not necessarily referring to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
Claims
1. Dryer structure for atmospheric gas recovery processes, characterized by the fact that it comprises: The utility model provides a drying device, including the drying device shell (1), the first gas inlet and outlet (11) are seted up in the top of drying device shell (1), the second gas inlet and outlet (12) are seted up in the bottom of drying device shell (1), the inside fixed connection of drying device shell (1) has sieve plate subassembly (4), sieve plate subassembly (4) is provided with multiple along the height direction.
2. The dryer configuration for atmospheric gas recovery processes according to claim 1, characterized in that: The bottom of the sieve plate subassembly (4) is provided with a fixed support (5), the end of the fixed support (5) is fixedly connected with the drying device shell (1), and the sieve plate subassembly (4) is fixedly connected with the fixed support (5).
3. The dryer configuration for atmospheric gas recovery processes according to claim 2, characterized in that: The sieve plate subassembly (4) includes oppositely arranged upper sieve plate (41) and lower sieve plate (42), the upper sieve plate (41) and the lower sieve plate (42) divide the inside of the drying device shell (1) into an upper part above the upper sieve plate (41) and a lower part below the lower sieve plate (42).
4. The dryer configuration for atmospheric gas recovery processes according to claim 3, characterized in that: The upper sieve plate (41) and the lower sieve plate (42) are provided with a leakage prevention net (43) therebetween, and the mesh diameter of the leakage prevention net (43) is smaller than the mesh diameter of the upper sieve plate (41) and the lower sieve plate (42).
5. The dryer configuration for atmospheric gas recovery processes according to claim 3, characterized in that: The upper sieve plate (41) is provided with upper sieve holes at positions offset from the frame of the fixed support (5), and the lower sieve plate (42) is provided with lower sieve holes at positions offset from the frame of the fixed support (5).
6. The dryer configuration for atmospheric gas recovery processes according to claim 3, characterized in that: The upper sieve plate (41) is fixedly connected with a handle (44) at a position opposite to the fixed support (5).
7. The dryer configuration for atmospheric gas recovery processes according to claim 1, characterized in that: The side wall of the drying device shell (1) is provided with an inspection hole (13) above the sieve plate subassembly (4).
8. The dryer configuration for atmospheric gas recovery processes according to claim 1, characterized in that: The side wall of the drying device shell (1) is provided with a discharge port (14) below the sieve plate subassembly (4).
9. The dryer configuration for atmospheric gas recovery processes according to claim 1, characterized in that: The top of the drying device shell (1) is fixedly connected with an upper distributor (2) relative to the first gas inlet and outlet (11), and the bottom of the drying device shell (1) is fixedly connected with a lower distributor (3) relative to the second gas inlet and outlet (12).
10. The dryer configuration for atmospheric gas recovery processes according to claim 9, characterized in that: The upper distributor (2) includes an upper gas inlet and outlet main pipe (21) in communication with the first gas inlet and outlet (11), a plurality of upper gas inlet and outlet branch pipes (22) fixedly connected to the two sides of the upper gas inlet and outlet main pipe (21) and in communication with the upper gas inlet and outlet main pipe (21), and upper gas inlet and outlet holes provided in the bottom of each upper gas inlet and outlet branch pipe (22); the lower distributor (3) includes a lower gas inlet and outlet main pipe (31) in communication with the second gas inlet and outlet (12), a plurality of lower gas inlet and outlet branch pipes (32) fixedly connected to the two sides of the lower gas inlet and outlet main pipe (31) and in communication with the lower gas inlet and outlet main pipe (31), and lower gas inlet and outlet holes provided in the top of each lower gas inlet and outlet branch pipe (32).